The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 01, 2000
Filed:
May. 04, 1998
Applicant:
Inventors:
Ichiro Urata, Tokyo, JP;
Takao Uchida, Tokyo, JP;
Assignee:
Oki Data Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
326 83 ; 326 87 ; 326 47 ;
Abstract
An output buffer circuit drives an output terminal of an integrated circuit by means of at least two buffer circuits. A buffer control circuit in the output buffer circuit selectively enables or disables the buffer circuits to provide a driving capability suitable for the load connected to the output terminal. The buffer control circuit can decide which buffer circuits to disable by sensing the transition time of a signal output from the output terminal following a reset.